:root{--n:#081b33;--b:#1e63ff;--ink:#152238;--mut:#66758b;--line:#dce5ef;--soft:#f5f8fc;--green:#0c7a55;--amber:#b66b00}.timeline-shell{width:min(1180px,92vw);margin:auto}.timeline-hero{background:linear-gradient(135deg,#081b33,#102f5b);color:#fff;padding:72px 0 58px}.timeline-kicker,.eyebrow{font-size:.75rem;letter-spacing:.13em;text-transform:uppercase;font-weight:800;color:#6fa2ff}.timeline-hero h1{font-size:clamp(2.5rem,5vw,5rem);line-height:.98;margin:.6rem 0 1rem;max-width:900px}.timeline-hero .lead{font-size:1.15rem;line-height:1.65;max-width:860px;color:#dce7f7}.meta,.actions,.metrics,.cards,.sources,.models,.faq,.milestone-grid{display:flex;gap:14px;flex-wrap:wrap}.meta span{border:1px solid #496584;border-radius:99px;padding:7px 11px;font-size:.82rem}.actions{margin-top:26px}.btn{display:inline-block;padding:12px 16px;border-radius:10px;background:#1e63ff;color:#fff!important;text-decoration:none;font-weight:800}.btn.secondary{background:transparent;border:1px solid #8aa4c6}.metrics{margin-top:30px}.metric{flex:1;min-width:180px;border:1px solid #375678;background:#0d294c;padding:18px;border-radius:14px}.metric small{display:block;color:#9bb4d3}.metric strong{display:block;font-size:1.8rem;margin:5px 0}.jump{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}.jump .timeline-shell{display:flex;gap:18px;overflow:auto;padding:12px 0}.jump a{white-space:nowrap;color:var(--ink);font-weight:700;text-decoration:none;font-size:.9rem}.section{padding:58px 0}.section.soft{background:var(--soft)}.head{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:24px}.head h2{font-size:2rem;margin:.3rem 0}.head p{max-width:520px;color:var(--mut)}.answer{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}.card,.model,.source,.milestone{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.dark{background:var(--n);color:white}.dark p{color:#dce7f7}.models{align-items:stretch}.model{width:calc(33.333% - 10px)}.model h3{margin:.4rem 0}.range{font-weight:900;color:var(--b);font-size:1.15rem}.milestone-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.milestone{min-height:150px}.milestone .day{font-size:1.6rem;font-weight:900;color:var(--b)}.timeline-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line)}.timeline-table th,.timeline-table td{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.timeline-table th{background:var(--n);color:#fff}.timeline-table tr:nth-child(even) td{background:#fafcff}.critical{border-left:4px solid var(--amber);padding-left:14px}.fact{border-left:4px solid var(--green)}.sources .source{width:calc(33.333% - 10px)}.source small{color:var(--mut)}.source a{color:var(--b);font-weight:700}.faq{display:block}.faq details{border-bottom:1px solid var(--line);padding:14px 0}.faq summary{font-weight:800;cursor:pointer}.callout{background:var(--n);color:#fff;border-radius:20px;padding:28px;display:flex;justify-content:space-between;gap:25px;align-items:center}.callout p{color:#dce7f7}.timeline-footer{background:#07162a;color:#c9d5e5;padding:28px 0}.timeline-footer a{color:#fff}@media(max-width:900px){.answer{grid-template-columns:1fr}.model,.sources .source{width:100%}.milestone-grid{grid-template-columns:repeat(2,1fr)}.head,.callout{display:block}.callout .actions{margin-top:18px}}@media(max-width:520px){.milestone-grid{grid-template-columns:1fr}.timeline-hero{padding-top:48px}.timeline-table{font-size:.83rem}}